Werk #15450: mk-job: improvements to state file persistence

Component Checks & agents
Title mk-job: improvements to state file persistence
Date Apr 14, 2023
Level Trivial Change
Class Bug Fix
Compatibility Compatible - no manual interaction needed
Checkmk versions & editions
2.3.0b1
Not yet released
Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk Cloud (CCE), Checkmk MSP (CME)
2.3.0b1 Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk Cloud (CCE), Checkmk MSP (CME)

The mk-job agent plugin saves information about a job's running and completed states in files under $MK_VARDIR/job. These files were written dynamically and this could give rise to situations in which the state file was read while information was being written to it. The information within the <<<job>>> section could therefore be confusing and incomplete. This has been improved by introducing atomic operations: files are now either present and complete, or absent altogether.

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